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Production method of circular-blow multi-end bright profiled polyester filament yarns more than 3dpf (denier per filament)

A special-shaped polyester filament and production method technology, applied to the melting of filament raw materials, filament/thread forming, single-component polyester artificial filament, etc., can solve the problems of immature ring blowing technology and achieve product quality Good drying uniformity, advantages of production stability, obvious effect of energy consumption reduction

Inactive Publication Date: 2012-07-18
TONGXIANG ZHONGCHEN CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing ring blowing technology only guarantees products of 2dpf and below, and the ring blowing technology of products above 2dpf is still immature. Developing a suitable ring blowing production technology for products above 3dpf can reduce cooling energy consumption and improve quality. It is the best choice for ring blowing applications Another new direction of research and development

Method used

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  • Production method of circular-blow multi-end bright profiled polyester filament yarns more than 3dpf (denier per filament)
  • Production method of circular-blow multi-end bright profiled polyester filament yarns more than 3dpf (denier per filament)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The production method of ring-blown multi-end bright special-shaped polyester filaments above 3dpf described in this embodiment uses bright polyester melt as raw material, and the bright polyester melt is increased by a booster pump through a melt delivery pipeline 1 After pressing, it enters the melt cooler. After the melt is cooled by the melt cooler, it is sent to the spinning box 2, after being metered by the metering pump 3, and then filtered by the spinning assembly 4 in the spinning box 2 and extruded After being cooled and solidified by the spinning ring blowing device, the nascent fiber is oiled by the oil nozzle and pre-networked by the network device. After the godet roller integrated on the winder controls the tension required by the process, the tow is introduced into the winder. Assembling and forming, in which: the temperature of the melt conveying pipeline 1 is 277℃ for melt conveying;

[0016] The spinning box 2 is spun at 288°C, and the spinning assembly ...

Embodiment 2

[0020] The production method of ring-blown multi-end light profiled polyester filaments above 3dpf described in this embodiment includes:

[0021] 1) After filtering the bright polyester melt processed by the polymerization melt cooler, it is pressurized by the booster pump through the melt conveying pipeline 1, and the viscosity drop is ≤0.012 after being processed by the spinning melt cooler again The uniform and stable high-quality polyester melt enters the spinning box 2, after being accurately metered by the metering pump 3, enters the independent cavities of the spinning assembly 4 in the spinning box 2, and is extruded after filtering. The temperature of the polyester melt treated with the secondary cooler is 278°C, the temperature of the spinning box 2 is 294°C, and the spinning speed is 3150m / min.

[0022] 2) The tow is cooled and solidified into a nascent fiber by a spinning ring blowing device with a ring blowing tube length of 260mm, where the length of the airless zone...

Embodiment 3

[0025] The production method of ring-blown multi-end bright shaped polyester filaments above 3dpf described in this embodiment includes:

[0026] 1) After filtering the bright polyester melt processed by the polymerization melt cooler, it is pressurized by the booster pump through the melt conveying pipeline 1, and the viscosity drop is less than 0.012 after being processed by the spinning melt cooler again. The uniform and stable high-quality polyester melt enters the spinning box 2 after being accurately metered by the metering pump 3, enters the independent cavities of the spinning assembly 4 in the spinning box 2, and is extruded after filtering. The temperature of the polyester melt treated by the secondary cooler is 282°C, the temperature of the spinning box 2 is 289°C, and the spinning speed is 3000m / min.

[0027] 2) The tow is cooled and solidified into a nascent fiber by a spinning ring blowing device with a wind tube length of 230mm, where the length of the windless zone ...

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Abstract

The invention discloses a production method of circular-blow multi-end bright profiled polyester filament yarns more than 3dpf (denier per filament), which is characterized in that a melt conveying pipe is used for conveying melt within a temperature range of from 277 DEG C to 283 DEG C; a spinning box is used for spinning within a temperature range of from 288 DEG C to 295 DEG C, spinning components, each having one-spinneret two-yarn independent cavity for metering, are used for spinning, polyester melt enters the independent cavities of the spinning components and filtered and extruded to form, and 20 yarns are extruded to form at each spinning station; and a calm area of a circular blower is 50mm-65mm high, a circular blow cylinder is more than 230mm high, circular blow pressure is more than 35Pa, and circular blow position for the yarns is more than 900mm away from a nozzle. By the method, the problems of insufficiency in cooling air volume and cooling uniformity are solved effectively. The volume of circular air blow is only 30% of that of lateral air blow, energy consumption is lowered evidently, yarn levelness of products is high, and variation coefficient of product profile degree is small.

Description

Technical field [0001] The invention relates to a method for producing chemical fibers, in particular to a method for producing ring-blown multi-end light profiled polyester filaments above 3dpf. Background technique [0002] The application of ring blowing cooling technology in the polyester filament industry has been gradually promoted. The initial research and development of ring blowing is mainly for products with fine denier and porous such as 150D / 288F, 50D / 144F and monofilaments below 1dpf or even less than 0.5dpf to achieve continuous Mass production requirements, domestic manufacturers of this series of products have been able to mass continuous production. [0003] Due to the application of circulating air cooling, not only the range of varieties is expanded, but also energy consumption is saved. Compared with the traditional side blowing, the ring blowing cooling air volume is only about 30% of the side blowing volume under the same cooling effect. At the same time, the...

Claims

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Application Information

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IPC IPC(8): D01D5/092D01D5/096D01D5/253D01D1/04D01F6/62
Inventor 沈健彧刘春福赵春财崔利
Owner TONGXIANG ZHONGCHEN CHEM FIBER
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